Merge 0ad1457ee7 into 10872e02d1

add docker init command to docker cheatsheet

languages/C.txt

@@ -149,6 +149,7 @@ Operators
   ^=   	bitwise exclusive or and store
   |=   	bitwise or and store
   ,    	separator as in   ( y=x,z=++x )
+  ;     statement terminator.
 
 
 Operator precedence

languages/python.md

@@ -380,3 +380,22 @@ function_name()
 * We need not to specify the return type of the function.
 * Functions by default return `None` 
 * We can return any datatype.
+
+### Function arguments
+
+- You can pass arguments in a function while calling to use inside it.
+- Like if you want to add two numbers.
+
+```
+def sum(a , b):
+    return a + b 
+```
+- In this a and b are passed and their sum is returned
+
+-You can also assign the return value of this function to a variable
+
+```
+sum_of_two_numbers = sum(5,8) #calling the function and value assigned
+print(sum_of_two_numbers)
+```
+-This will print sum of 5 and 8

tools/docker.sh

@@ -2,7 +2,7 @@
 # DOCKER
 ##############################################################################
 
-
+docker init                                 # Creates Docker-related starter files 
 docker build -t friendlyname .              # Create image using this directory's Dockerfile
 docker run -p 4000:80 friendlyname          # Run "friendlyname" mapping port 4000 to 80
 docker run -d -p 4000:80 friendlyname       # Same thing, but in detached mode